Note: the APP-STATUS-BADGE-TOKEN is a special token which can only be used
for calling this endpoint (you can find this token in the Badge configurator popup).
No other information can be retrieved with this token,
and it's not the same as the API Token which you can find on the Code tab!

If the APP-ID and the APP-STATUS-BADGE-TOKEN parameters are correct,
and identify an existing app, a 200 HTTP code is returned alongside the JSON response,
even if the branch parameter points to a non existing branch (the JSON
response in this case will be {"status": "unknown"} with a 200 HTTP code).

If the APP-ID or the APP-STATUS-BADGE-TOKEN (or both) is not correct,
you'll get a HTTP 403 code with an empty response body.